Evidence For Ancient Wet Martian Environment Hints At Habitats For Life

Photo credit: An artist's impression of what an ancient ocean on Mars might have looked like. NASA/GSFC

Mars wasn’t always so dry and barren – the large fluvial features on its surface betray a past brimming with flowing water. Along with clear evidence of liquid, salty water patches still existing today, evidence of ancient mega-tsunamis has also recently been uncovered. If these were generated by huge impacts, then there had to have been a sizable ocean residing on the surface once upon a time.

Two Young Impact Craters Have Just Been Spotted On The Moon's South Pole

Photo credit: The two newly discovered, geologically young craters – one (right) 16 million million years old, the other (left) between 75 and 420 million years old. Blue areas are at lower elevations than green regions. NASA/SwRI/GSFC/ASU Jmoon

Our nearest celestial compatriot continues to surprise us. A team of researchers from the Southwest Research Institute (SwRI) has just spotted two new lunar craters, one of which – at an age of 16 million years – is decidedly young, geologically speaking. Both are less than 2 kilometers (1.2 miles) across.